<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h1>scope2.js页面</h1>
    pageContext是否有值：<%=pageContext.getAttribute("key")%> <br>
    request是否有值：<%=request.getAttribute("key")%> <br>
    session是否有值：<%=session.getAttribute("key")%> <br>
    application是否有值：<%=application.getAttribute("key")%> <br>

</body>
</html>
